[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.297 by root, Fri Jul 10 00:36:21 2009 UTC vs.
Revision 1.318 by root, Tue Nov 17 00:22:28 2009 UTC

…		…
133	# else	133	# else
134	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
135	# endif	135	# endif
136	# endif	136	# endif
137		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
138	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
139	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
140	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
141	# else	149	# else
142	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
…		…
178	# endif	186	# endif
179	#endif	187	#endif
180		188
181	/* this block tries to deduce configuration from header-defined symbols and defaults */	189	/* this block tries to deduce configuration from header-defined symbols and defaults */
182		190
		191	/* try to deduce the maximum number of signals on this platform */
		192	#if defined (EV_NSIG)
		193	/* use what's provided */
		194	#elif defined (NSIG)
		195	# define EV_NSIG (NSIG)
		196	#elif defined(_NSIG)
		197	# define EV_NSIG (_NSIG)
		198	#elif defined (SIGMAX)
		199	# define EV_NSIG (SIGMAX+1)
		200	#elif defined (SIG_MAX)
		201	# define EV_NSIG (SIG_MAX+1)
		202	#elif defined (_SIG_MAX)
		203	# define EV_NSIG (_SIG_MAX+1)
		204	#elif defined (MAXSIG)
		205	# define EV_NSIG (MAXSIG+1)
		206	#elif defined (MAX_SIG)
		207	# define EV_NSIG (MAX_SIG+1)
		208	#elif defined (SIGARRAYSIZE)
		209	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		210	#elif defined (_sys_nsig)
		211	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		212	#else
		213	# error "unable to find value for NSIG, please report"
		214	/* to make it compile regardless, just remove the above line */
		215	# define EV_NSIG 65
		216	#endif
		217
183	#ifndef EV_USE_CLOCK_SYSCALL	218	#ifndef EV_USE_CLOCK_SYSCALL
184	# if __linux && __GLIBC__ >= 2	219	# if __linux && __GLIBC__ >= 2
185	# define EV_USE_CLOCK_SYSCALL 1	220	# define EV_USE_CLOCK_SYSCALL 1
186	# else	221	# else
187	# define EV_USE_CLOCK_SYSCALL 0	222	# define EV_USE_CLOCK_SYSCALL 0
…		…
263	#ifndef EV_USE_EVENTFD	298	#ifndef EV_USE_EVENTFD
264	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))	299	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265	# define EV_USE_EVENTFD 1	300	# define EV_USE_EVENTFD 1
266	# else	301	# else
267	# define EV_USE_EVENTFD 0	302	# define EV_USE_EVENTFD 0
		303	# endif
		304	#endif
		305
		306	#ifndef EV_USE_SIGNALFD
		307	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		308	# define EV_USE_SIGNALFD 1
		309	# else
		310	# define EV_USE_SIGNALFD 0
268	# endif	311	# endif
269	#endif	312	#endif
270		313
271	#if 0 /* debugging */	314	#if 0 /* debugging */
272	# define EV_VERIFY 3	315	# define EV_VERIFY 3
…		…
339	#endif	382	#endif
340		383
341	#if EV_USE_EVENTFD	384	#if EV_USE_EVENTFD
342	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	385	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343	# include <stdint.h>	386	# include <stdint.h>
		387	# ifndef EFD_NONBLOCK
		388	# define EFD_NONBLOCK O_NONBLOCK
		389	# endif
		390	# ifndef EFD_CLOEXEC
		391	# ifdef O_CLOEXEC
		392	# define EFD_CLOEXEC O_CLOEXEC
		393	# else
		394	# define EFD_CLOEXEC 02000000
		395	# endif
		396	# endif
344	# ifdef __cplusplus	397	# ifdef __cplusplus
345	extern "C" {	398	extern "C" {
346	# endif	399	# endif
347	int eventfd (unsigned int initval, int flags);	400	int eventfd (unsigned int initval, int flags);
348	# ifdef __cplusplus	401	# ifdef __cplusplus
349	}	402	}
350	# endif	403	# endif
351	#endif	404	#endif
		405
		406	#if EV_USE_SIGNALFD
		407	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		408	# include <stdint.h>
		409	# ifndef SFD_NONBLOCK
		410	# define SFD_NONBLOCK O_NONBLOCK
		411	# endif
		412	# ifndef SFD_CLOEXEC
		413	# ifdef O_CLOEXEC
		414	# define SFD_CLOEXEC O_CLOEXEC
		415	# else
		416	# define SFD_CLOEXEC 02000000
		417	# endif
		418	# endif
		419	# ifdef __cplusplus
		420	extern "C" {
		421	# endif
		422	int signalfd (int fd, const sigset_t *mask, int flags);
		423
		424	struct signalfd_siginfo
		425	{
		426	uint32_t ssi_signo;
		427	char pad[128 - sizeof (uint32_t)];
		428	};
		429	# ifdef __cplusplus
		430	}
		431	# endif
		432	#endif
		433
352		434
353	/**/	435	/**/
354		436
355	#if EV_VERIFY >= 3	437	#if EV_VERIFY >= 3
356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	438	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
368	*/	450	*/
369	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	451	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
370		452
371	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	453	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	454	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
374		455
375	#if __GNUC__ >= 4	456	#if __GNUC__ >= 4
376	# define expect(expr,value) __builtin_expect ((expr),(value))	457	# define expect(expr,value) __builtin_expect ((expr),(value))
377	# define noinline __attribute__ ((noinline))	458	# define noinline __attribute__ ((noinline))
378	#else	459	#else
…		…
419		500
420	#if EV_USE_MONOTONIC	501	#if EV_USE_MONOTONIC
421	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	502	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422	#endif	503	#endif
423		504
		505	#ifndef EV_FD_TO_WIN32_HANDLE
		506	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		507	#endif
		508	#ifndef EV_WIN32_HANDLE_TO_FD
		509	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0)
		510	#endif
		511	#ifndef EV_WIN32_CLOSE_FD
		512	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		513	#endif
		514
424	#ifdef _WIN32	515	#ifdef _WIN32
425	# include "ev_win32.c"	516	# include "ev_win32.c"
426	#endif	517	#endif
427		518
428	/*****************************************************************************/	519	/*****************************************************************************/
…		…
490	#define ev_malloc(size) ev_realloc (0, (size))	581	#define ev_malloc(size) ev_realloc (0, (size))
491	#define ev_free(ptr) ev_realloc ((ptr), 0)	582	#define ev_free(ptr) ev_realloc ((ptr), 0)
492		583
493	/*****************************************************************************/	584	/*****************************************************************************/
494		585
		586	/* set in reify when reification needed */
		587	#define EV_ANFD_REIFY 1
		588
495	/* file descriptor info structure */	589	/* file descriptor info structure */
496	typedef struct	590	typedef struct
497	{	591	{
498	WL head;	592	WL head;
499	unsigned char events; /* the events watched for */	593	unsigned char events; /* the events watched for */
500	unsigned char reify; /* flag set when this ANFD needs reification */	594	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	595	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
502	unsigned char unused;	596	unsigned char unused;
503	#if EV_USE_EPOLL	597	#if EV_USE_EPOLL
504	unsigned int egen; /* generation counter to counter epoll bugs */	598	unsigned int egen; /* generation counter to counter epoll bugs */
505	#endif	599	#endif
…		…
568	static int ev_default_loop_ptr;	662	static int ev_default_loop_ptr;
569		663
570	#endif	664	#endif
571		665
572	#if EV_MINIMAL < 2	666	#if EV_MINIMAL < 2
573	# define EV_SUSPEND_CB if (expect_false (suspend_cb)) suspend_cb (EV_A)
574	# define EV_RESUME_CB if (expect_false (resume_cb )) resume_cb (EV_A)	667	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		668	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
575	# define EV_INVOKE_PENDING invoke_cb (EV_A)	669	# define EV_INVOKE_PENDING invoke_cb (EV_A)
576	#else	670	#else
577	# define EV_SUSPEND_CB (void)0
578	# define EV_RESUME_CB (void)0	671	# define EV_RELEASE_CB (void)0
		672	# define EV_ACQUIRE_CB (void)0
579	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)	673	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
580	#endif	674	#endif
		675
		676	#define EVUNLOOP_RECURSE 0x80
581		677
582	/*****************************************************************************/	678	/*****************************************************************************/
583		679
584	#ifndef EV_HAVE_EV_TIME	680	#ifndef EV_HAVE_EV_TIME
585	ev_tstamp	681	ev_tstamp
…		…
642		738
643	tv.tv_sec = (time_t)delay;	739	tv.tv_sec = (time_t)delay;
644	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	740	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
645		741
646	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	742	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
647	/* somehting not guaranteed by newer posix versions, but guaranteed */	743	/* something not guaranteed by newer posix versions, but guaranteed */
648	/* by older ones */	744	/* by older ones */
649	select (0, 0, 0, 0, &tv);	745	select (0, 0, 0, 0, &tv);
650	#endif	746	#endif
651	}	747	}
652	}	748	}
…		…
760	}	856	}
761		857
762	/*****************************************************************************/	858	/*****************************************************************************/
763		859
764	inline_speed void	860	inline_speed void
765	fd_event (EV_P_ int fd, int revents)	861	fd_event_nc (EV_P_ int fd, int revents)
766	{	862	{
767	ANFD *anfd = anfds + fd;	863	ANFD *anfd = anfds + fd;
768	ev_io *w;	864	ev_io *w;
769		865
770	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	866	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
…		…
774	if (ev)	870	if (ev)
775	ev_feed_event (EV_A_ (W)w, ev);	871	ev_feed_event (EV_A_ (W)w, ev);
776	}	872	}
777	}	873	}
778		874
		875	/* do not submit kernel events for fds that have reify set */
		876	/* because that means they changed while we were polling for new events */
		877	inline_speed void
		878	fd_event (EV_P_ int fd, int revents)
		879	{
		880	ANFD *anfd = anfds + fd;
		881
		882	if (expect_true (!anfd->reify))
		883	fd_event_nc (EV_A_ fd, revents);
		884	}
		885
779	void	886	void
780	ev_feed_fd_event (EV_P_ int fd, int revents)	887	ev_feed_fd_event (EV_P_ int fd, int revents)
781	{	888	{
782	if (fd >= 0 && fd < anfdmax)	889	if (fd >= 0 && fd < anfdmax)
783	fd_event (EV_A_ fd, revents);	890	fd_event_nc (EV_A_ fd, revents);
784	}	891	}
785		892
786	/* make sure the external fd watch events are in-sync */	893	/* make sure the external fd watch events are in-sync */
787	/* with the kernel/libev internal state */	894	/* with the kernel/libev internal state */
788	inline_size void	895	inline_size void
…		…
803		910
804	#if EV_SELECT_IS_WINSOCKET	911	#if EV_SELECT_IS_WINSOCKET
805	if (events)	912	if (events)
806	{	913	{
807	unsigned long arg;	914	unsigned long arg;
808	#ifdef EV_FD_TO_WIN32_HANDLE
809	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	915	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
810	#else
811	anfd->handle = _get_osfhandle (fd);
812	#endif
813	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	916	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
814	}	917	}
815	#endif	918	#endif
816		919
817	{	920	{
…		…
888		991
889	for (fd = anfdmax; fd--; )	992	for (fd = anfdmax; fd--; )
890	if (anfds [fd].events)	993	if (anfds [fd].events)
891	{	994	{
892	fd_kill (EV_A_ fd);	995	fd_kill (EV_A_ fd);
893	return;	996	break;
894	}	997	}
895	}	998	}
896		999
897	/* usually called after fork if backend needs to re-arm all fds from scratch */	1000	/* usually called after fork if backend needs to re-arm all fds from scratch */
898	static void noinline	1001	static void noinline
…		…
903	for (fd = 0; fd < anfdmax; ++fd)	1006	for (fd = 0; fd < anfdmax; ++fd)
904	if (anfds [fd].events)	1007	if (anfds [fd].events)
905	{	1008	{
906	anfds [fd].events = 0;	1009	anfds [fd].events = 0;
907	anfds [fd].emask = 0;	1010	anfds [fd].emask = 0;
908	fd_change (EV_A_ fd, EV__IOFDSET \| 1);	1011	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);
909	}	1012	}
910	}	1013	}
911		1014
912	/*****************************************************************************/	1015	/*****************************************************************************/
913		1016
…		…
988		1091
989	for (;;)	1092	for (;;)
990	{	1093	{
991	int c = k << 1;	1094	int c = k << 1;
992		1095
993	if (c > N + HEAP0 - 1)	1096	if (c >= N + HEAP0)
994	break;	1097	break;
995		1098
996	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1099	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
997	? 1 : 0;	1100	? 1 : 0;
998		1101
…		…
1034		1137
1035	/* move an element suitably so it is in a correct place */	1138	/* move an element suitably so it is in a correct place */
1036	inline_size void	1139	inline_size void
1037	adjustheap (ANHE *heap, int N, int k)	1140	adjustheap (ANHE *heap, int N, int k)
1038	{	1141	{
1039	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1142	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1040	upheap (heap, k);	1143	upheap (heap, k);
1041	else	1144	else
1042	downheap (heap, N, k);	1145	downheap (heap, N, k);
1043	}	1146	}
1044		1147
…		…
1057	/*****************************************************************************/	1160	/*****************************************************************************/
1058		1161
1059	/* associate signal watchers to a signal signal */	1162	/* associate signal watchers to a signal signal */
1060	typedef struct	1163	typedef struct
1061	{	1164	{
		1165	EV_ATOMIC_T pending;
		1166	#if EV_MULTIPLICITY
		1167	EV_P;
		1168	#endif
1062	WL head;	1169	WL head;
1063	EV_ATOMIC_T gotsig;
1064	} ANSIG;	1170	} ANSIG;
1065		1171
1066	static ANSIG *signals;	1172	static ANSIG signals [EV_NSIG - 1];
1067	static int signalmax;
1068
1069	static EV_ATOMIC_T gotsig;
1070		1173
1071	/*****************************************************************************/	1174	/*****************************************************************************/
1072		1175
1073	/* used to prepare libev internal fd's */	1176	/* used to prepare libev internal fd's */
1074	/* this is not fork-safe */	1177	/* this is not fork-safe */
…		…
1088	evpipe_init (EV_P)	1191	evpipe_init (EV_P)
1089	{	1192	{
1090	if (!ev_is_active (&pipe_w))	1193	if (!ev_is_active (&pipe_w))
1091	{	1194	{
1092	#if EV_USE_EVENTFD	1195	#if EV_USE_EVENTFD
		1196	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
		1197	if (evfd < 0 && errno == EINVAL)
1093	if ((evfd = eventfd (0, 0)) >= 0)	1198	evfd = eventfd (0, 0);
		1199
		1200	if (evfd >= 0)
1094	{	1201	{
1095	evpipe [0] = -1;	1202	evpipe [0] = -1;
1096	fd_intern (evfd);	1203	fd_intern (evfd); /* doing it twice doesn't hurt */
1097	ev_io_set (&pipe_w, evfd, EV_READ);	1204	ev_io_set (&pipe_w, evfd, EV_READ);
1098	}	1205	}
1099	else	1206	else
1100	#endif	1207	#endif
1101	{	1208	{
…		…
1138	/* called whenever the libev signal pipe */	1245	/* called whenever the libev signal pipe */
1139	/* got some events (signal, async) */	1246	/* got some events (signal, async) */
1140	static void	1247	static void
1141	pipecb (EV_P_ ev_io *iow, int revents)	1248	pipecb (EV_P_ ev_io *iow, int revents)
1142	{	1249	{
		1250	int i;
		1251
1143	#if EV_USE_EVENTFD	1252	#if EV_USE_EVENTFD
1144	if (evfd >= 0)	1253	if (evfd >= 0)
1145	{	1254	{
1146	uint64_t counter;	1255	uint64_t counter;
1147	read (evfd, &counter, sizeof (uint64_t));	1256	read (evfd, &counter, sizeof (uint64_t));
…		…
1151	{	1260	{
1152	char dummy;	1261	char dummy;
1153	read (evpipe [0], &dummy, 1);	1262	read (evpipe [0], &dummy, 1);
1154	}	1263	}
1155		1264
1156	if (gotsig && ev_is_default_loop (EV_A))	1265	if (sig_pending)
1157	{	1266	{
1158	int signum;	1267	sig_pending = 0;
1159	gotsig = 0;
1160		1268
1161	for (signum = signalmax; signum--; )	1269	for (i = EV_NSIG - 1; i--; )
1162	if (signals [signum].gotsig)	1270	if (expect_false (signals [i].pending))
1163	ev_feed_signal_event (EV_A_ signum + 1);	1271	ev_feed_signal_event (EV_A_ i + 1);
1164	}	1272	}
1165		1273
1166	#if EV_ASYNC_ENABLE	1274	#if EV_ASYNC_ENABLE
1167	if (gotasync)	1275	if (async_pending)
1168	{	1276	{
1169	int i;	1277	async_pending = 0;
1170	gotasync = 0;
1171		1278
1172	for (i = asynccnt; i--; )	1279	for (i = asynccnt; i--; )
1173	if (asyncs [i]->sent)	1280	if (asyncs [i]->sent)
1174	{	1281	{
1175	asyncs [i]->sent = 0;	1282	asyncs [i]->sent = 0;
…		…
1183		1290
1184	static void	1291	static void
1185	ev_sighandler (int signum)	1292	ev_sighandler (int signum)
1186	{	1293	{
1187	#if EV_MULTIPLICITY	1294	#if EV_MULTIPLICITY
1188	struct ev_loop *loop = &default_loop_struct;	1295	EV_P = signals [signum - 1].loop;
1189	#endif	1296	#endif
1190		1297
1191	#if _WIN32	1298	#if _WIN32
1192	signal (signum, ev_sighandler);	1299	signal (signum, ev_sighandler);
1193	#endif	1300	#endif
1194		1301
1195	signals [signum - 1].gotsig = 1;	1302	signals [signum - 1].pending = 1;
1196	evpipe_write (EV_A_ &gotsig);	1303	evpipe_write (EV_A_ &sig_pending);
1197	}	1304	}
1198		1305
1199	void noinline	1306	void noinline
1200	ev_feed_signal_event (EV_P_ int signum)	1307	ev_feed_signal_event (EV_P_ int signum)
1201	{	1308	{
1202	WL w;	1309	WL w;
1203		1310
		1311	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))
		1312	return;
		1313
		1314	--signum;
		1315
1204	#if EV_MULTIPLICITY	1316	#if EV_MULTIPLICITY
1205	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1317	/* it is permissible to try to feed a signal to the wrong loop */
1206	#endif	1318	/* or, likely more useful, feeding a signal nobody is waiting for */
1207		1319
1208	--signum;	1320	if (expect_false (signals [signum].loop != EV_A))
1209
1210	if (signum < 0 \|\| signum >= signalmax)
1211	return;	1321	return;
		1322	#endif
1212		1323
1213	signals [signum].gotsig = 0;	1324	signals [signum].pending = 0;
1214		1325
1215	for (w = signals [signum].head; w; w = w->next)	1326	for (w = signals [signum].head; w; w = w->next)
1216	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1327	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1217	}	1328	}
		1329
		1330	#if EV_USE_SIGNALFD
		1331	static void
		1332	sigfdcb (EV_P_ ev_io *iow, int revents)
		1333	{
		1334	struct signalfd_siginfo si[2], sip; / these structs are big */
		1335
		1336	for (;;)
		1337	{
		1338	ssize_t res = read (sigfd, si, sizeof (si));
		1339
		1340	/* not ISO-C, as res might be -1, but works with SuS */
		1341	for (sip = si; (char )sip < (char )si + res; ++sip)
		1342	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1343
		1344	if (res < (ssize_t)sizeof (si))
		1345	break;
		1346	}
		1347	}
		1348	#endif
1218		1349
1219	/*****************************************************************************/	1350	/*****************************************************************************/
1220		1351
1221	static WL childs [EV_PID_HASHSIZE];	1352	static WL childs [EV_PID_HASHSIZE];
1222		1353
…		…
1409	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))	1540	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1410	{	1541	{
1411	invoke_cb = invoke_pending_cb;	1542	invoke_cb = invoke_pending_cb;
1412	}	1543	}
1413		1544
1414	void ev_set_blocking_cb (EV_P_ void (suspend_cb_)(EV_P), void (resume_cb_)(EV_P))	1545	void ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))
1415	{	1546	{
1416	suspend_cb = suspend_cb_;	1547	release_cb = release;
1417	resume_cb = resume_cb_;	1548	acquire_cb = acquire;
1418	}	1549	}
1419	#endif	1550	#endif
1420		1551
1421	/* initialise a loop structure, must be zero-initialised */	1552	/* initialise a loop structure, must be zero-initialised */
1422	static void noinline	1553	static void noinline
…		…
1441		1572
1442	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1573	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1443	have_monotonic = 1;	1574	have_monotonic = 1;
1444	}	1575	}
1445	#endif	1576	#endif
		1577
		1578	/* pid check not overridable via env */
		1579	#ifndef _WIN32
		1580	if (flags & EVFLAG_FORKCHECK)
		1581	curpid = getpid ();
		1582	#endif
		1583
		1584	if (!(flags & EVFLAG_NOENV)
		1585	&& !enable_secure ()
		1586	&& getenv ("LIBEV_FLAGS"))
		1587	flags = atoi (getenv ("LIBEV_FLAGS"));
1446		1588
1447	ev_rt_now = ev_time ();	1589	ev_rt_now = ev_time ();
1448	mn_now = get_clock ();	1590	mn_now = get_clock ();
1449	now_floor = mn_now;	1591	now_floor = mn_now;
1450	rtmn_diff = ev_rt_now - mn_now;	1592	rtmn_diff = ev_rt_now - mn_now;
…		…
1454		1596
1455	io_blocktime = 0.;	1597	io_blocktime = 0.;
1456	timeout_blocktime = 0.;	1598	timeout_blocktime = 0.;
1457	backend = 0;	1599	backend = 0;
1458	backend_fd = -1;	1600	backend_fd = -1;
1459	gotasync = 0;	1601	sig_pending = 0;
		1602	#if EV_ASYNC_ENABLE
		1603	async_pending = 0;
		1604	#endif
1460	#if EV_USE_INOTIFY	1605	#if EV_USE_INOTIFY
1461	fs_fd = -2;	1606	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1462	#endif	1607	#endif
1463		1608	#if EV_USE_SIGNALFD
1464	/* pid check not overridable via env */	1609	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1465	#ifndef _WIN32
1466	if (flags & EVFLAG_FORKCHECK)
1467	curpid = getpid ();
1468	#endif	1610	#endif
1469
1470	if (!(flags & EVFLAG_NOENV)
1471	&& !enable_secure ()
1472	&& getenv ("LIBEV_FLAGS"))
1473	flags = atoi (getenv ("LIBEV_FLAGS"));
1474		1611
1475	if (!(flags & 0x0000ffffU))	1612	if (!(flags & 0x0000ffffU))
1476	flags \|= ev_recommended_backends ();	1613	flags \|= ev_recommended_backends ();
1477		1614
1478	#if EV_USE_PORT	1615	#if EV_USE_PORT
…		…
1504	{	1641	{
1505	int i;	1642	int i;
1506		1643
1507	if (ev_is_active (&pipe_w))	1644	if (ev_is_active (&pipe_w))
1508	{	1645	{
1509	ev_ref (EV_A); /* signal watcher */	1646	/ev_ref (EV_A);/
1510	ev_io_stop (EV_A_ &pipe_w);	1647	/ev_io_stop (EV_A_ &pipe_w);/
1511		1648
1512	#if EV_USE_EVENTFD	1649	#if EV_USE_EVENTFD
1513	if (evfd >= 0)	1650	if (evfd >= 0)
1514	close (evfd);	1651	close (evfd);
1515	#endif	1652	#endif
1516		1653
1517	if (evpipe [0] >= 0)	1654	if (evpipe [0] >= 0)
1518	{	1655	{
1519	close (evpipe [0]);	1656	EV_WIN32_CLOSE_FD (evpipe [0]);
1520	close (evpipe [1]);	1657	EV_WIN32_CLOSE_FD (evpipe [1]);
1521	}	1658	}
1522	}	1659	}
		1660
		1661	#if EV_USE_SIGNALFD
		1662	if (ev_is_active (&sigfd_w))
		1663	close (sigfd);
		1664	#endif
1523		1665
1524	#if EV_USE_INOTIFY	1666	#if EV_USE_INOTIFY
1525	if (fs_fd >= 0)	1667	if (fs_fd >= 0)
1526	close (fs_fd);	1668	close (fs_fd);
1527	#endif	1669	#endif
…		…
1551	#if EV_IDLE_ENABLE	1693	#if EV_IDLE_ENABLE
1552	array_free (idle, [i]);	1694	array_free (idle, [i]);
1553	#endif	1695	#endif
1554	}	1696	}
1555		1697
1556	ev_free (anfds); anfdmax = 0;	1698	ev_free (anfds); anfds = 0; anfdmax = 0;
1557		1699
1558	/* have to use the microsoft-never-gets-it-right macro */	1700	/* have to use the microsoft-never-gets-it-right macro */
1559	array_free (rfeed, EMPTY);	1701	array_free (rfeed, EMPTY);
1560	array_free (fdchange, EMPTY);	1702	array_free (fdchange, EMPTY);
1561	array_free (timer, EMPTY);	1703	array_free (timer, EMPTY);
…		…
1596		1738
1597	if (ev_is_active (&pipe_w))	1739	if (ev_is_active (&pipe_w))
1598	{	1740	{
1599	/* this "locks" the handlers against writing to the pipe */	1741	/* this "locks" the handlers against writing to the pipe */
1600	/* while we modify the fd vars */	1742	/* while we modify the fd vars */
1601	gotsig = 1;	1743	sig_pending = 1;
1602	#if EV_ASYNC_ENABLE	1744	#if EV_ASYNC_ENABLE
1603	gotasync = 1;	1745	async_pending = 1;
1604	#endif	1746	#endif
1605		1747
1606	ev_ref (EV_A);	1748	ev_ref (EV_A);
1607	ev_io_stop (EV_A_ &pipe_w);	1749	ev_io_stop (EV_A_ &pipe_w);
1608		1750
…		…
1611	close (evfd);	1753	close (evfd);
1612	#endif	1754	#endif
1613		1755
1614	if (evpipe [0] >= 0)	1756	if (evpipe [0] >= 0)
1615	{	1757	{
1616	close (evpipe [0]);	1758	EV_WIN32_CLOSE_FD (evpipe [0]);
1617	close (evpipe [1]);	1759	EV_WIN32_CLOSE_FD (evpipe [1]);
1618	}	1760	}
1619		1761
1620	evpipe_init (EV_A);	1762	evpipe_init (EV_A);
1621	/* now iterate over everything, in case we missed something */	1763	/* now iterate over everything, in case we missed something */
1622	pipecb (EV_A_ &pipe_w, EV_READ);	1764	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1628	#if EV_MULTIPLICITY	1770	#if EV_MULTIPLICITY
1629		1771
1630	struct ev_loop *	1772	struct ev_loop *
1631	ev_loop_new (unsigned int flags)	1773	ev_loop_new (unsigned int flags)
1632	{	1774	{
1633	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1775	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1634		1776
1635	memset (loop, 0, sizeof (struct ev_loop));	1777	memset (EV_A, 0, sizeof (struct ev_loop));
1636
1637	loop_init (EV_A_ flags);	1778	loop_init (EV_A_ flags);
1638		1779
1639	if (ev_backend (EV_A))	1780	if (ev_backend (EV_A))
1640	return loop;	1781	return EV_A;
1641		1782
1642	return 0;	1783	return 0;
1643	}	1784	}
1644		1785
1645	void	1786	void
…		…
1749	assert (checkmax >= checkcnt);	1890	assert (checkmax >= checkcnt);
1750	array_verify (EV_A_ (W *)checks, checkcnt);	1891	array_verify (EV_A_ (W *)checks, checkcnt);
1751		1892
1752	# if 0	1893	# if 0
1753	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1894	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
1754	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1895	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1755	# endif	1896	# endif
1756	#endif	1897	#endif
1757	}	1898	}
1758	#endif	1899	#endif
1759		1900
…		…
1766	#endif	1907	#endif
1767	{	1908	{
1768	if (!ev_default_loop_ptr)	1909	if (!ev_default_loop_ptr)
1769	{	1910	{
1770	#if EV_MULTIPLICITY	1911	#if EV_MULTIPLICITY
1771	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1912	EV_P = ev_default_loop_ptr = &default_loop_struct;
1772	#else	1913	#else
1773	ev_default_loop_ptr = 1;	1914	ev_default_loop_ptr = 1;
1774	#endif	1915	#endif
1775		1916
1776	loop_init (EV_A_ flags);	1917	loop_init (EV_A_ flags);
…		…
1793		1934
1794	void	1935	void
1795	ev_default_destroy (void)	1936	ev_default_destroy (void)
1796	{	1937	{
1797	#if EV_MULTIPLICITY	1938	#if EV_MULTIPLICITY
1798	struct ev_loop *loop = ev_default_loop_ptr;	1939	EV_P = ev_default_loop_ptr;
1799	#endif	1940	#endif
1800		1941
1801	ev_default_loop_ptr = 0;	1942	ev_default_loop_ptr = 0;
1802		1943
1803	#ifndef _WIN32	1944	#ifndef _WIN32
…		…
1810		1951
1811	void	1952	void
1812	ev_default_fork (void)	1953	ev_default_fork (void)
1813	{	1954	{
1814	#if EV_MULTIPLICITY	1955	#if EV_MULTIPLICITY
1815	struct ev_loop *loop = ev_default_loop_ptr;	1956	EV_P = ev_default_loop_ptr;
1816	#endif	1957	#endif
1817		1958
1818	postfork = 1; /* must be in line with ev_loop_fork */	1959	postfork = 1; /* must be in line with ev_loop_fork */
1819	}	1960	}
1820		1961
…		…
1822		1963
1823	void	1964	void
1824	ev_invoke (EV_P_ void *w, int revents)	1965	ev_invoke (EV_P_ void *w, int revents)
1825	{	1966	{
1826	EV_CB_INVOKE ((W)w, revents);	1967	EV_CB_INVOKE ((W)w, revents);
		1968	}
		1969
		1970	unsigned int
		1971	ev_pending_count (EV_P)
		1972	{
		1973	int pri;
		1974	unsigned int count = 0;
		1975
		1976	for (pri = NUMPRI; pri--; )
		1977	count += pendingcnt [pri];
		1978
		1979	return count;
1827	}	1980	}
1828		1981
1829	void noinline	1982	void noinline
1830	ev_invoke_pending (EV_P)	1983	ev_invoke_pending (EV_P)
1831	{	1984	{
…		…
2077	{	2230	{
2078	#if EV_MINIMAL < 2	2231	#if EV_MINIMAL < 2
2079	++loop_depth;	2232	++loop_depth;
2080	#endif	2233	#endif
2081		2234
		2235	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2236
2082	loop_done = EVUNLOOP_CANCEL;	2237	loop_done = EVUNLOOP_CANCEL;
2083		2238
2084	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */	2239	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2085		2240
2086	do	2241	do
…		…
2113	{	2268	{
2114	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2269	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2115	EV_INVOKE_PENDING;	2270	EV_INVOKE_PENDING;
2116	}	2271	}
2117		2272
		2273	if (expect_false (loop_done))
		2274	break;
		2275
2118	/* we might have forked, so reify kernel state if necessary */	2276	/* we might have forked, so reify kernel state if necessary */
2119	if (expect_false (postfork))	2277	if (expect_false (postfork))
2120	loop_fork (EV_A);	2278	loop_fork (EV_A);
2121		2279
2122	/* update fd-related kernel structures */	2280	/* update fd-related kernel structures */
…		…
2172	}	2330	}
2173		2331
2174	#if EV_MINIMAL < 2	2332	#if EV_MINIMAL < 2
2175	++loop_count;	2333	++loop_count;
2176	#endif	2334	#endif
		2335	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2177	backend_poll (EV_A_ waittime);	2336	backend_poll (EV_A_ waittime);
		2337	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2178		2338
2179	/* update ev_rt_now, do magic */	2339	/* update ev_rt_now, do magic */
2180	time_update (EV_A_ waittime + sleeptime);	2340	time_update (EV_A_ waittime + sleeptime);
2181	}	2341	}
2182		2342
…		…
2267	inline_size void	2427	inline_size void
2268	wlist_del (WL *head, WL elem)	2428	wlist_del (WL *head, WL elem)
2269	{	2429	{
2270	while (*head)	2430	while (*head)
2271	{	2431	{
2272	if (*head == elem)	2432	if (expect_true (*head == elem))
2273	{	2433	{
2274	*head = elem->next;	2434	*head = elem->next;
2275	return;	2435	break;
2276	}	2436	}
2277		2437
2278	head = &(*head)->next;	2438	head = &(*head)->next;
2279	}	2439	}
2280	}	2440	}
…		…
2348		2508
2349	ev_start (EV_A_ (W)w, 1);	2509	ev_start (EV_A_ (W)w, 1);
2350	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2510	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2351	wlist_add (&anfds[fd].head, (WL)w);	2511	wlist_add (&anfds[fd].head, (WL)w);
2352		2512
2353	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| 1);	2513	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);
2354	w->events &= ~EV__IOFDSET;	2514	w->events &= ~EV__IOFDSET;
2355		2515
2356	EV_FREQUENT_CHECK;	2516	EV_FREQUENT_CHECK;
2357	}	2517	}
2358		2518
…		…
2452	}	2612	}
2453		2613
2454	EV_FREQUENT_CHECK;	2614	EV_FREQUENT_CHECK;
2455	}	2615	}
2456		2616
		2617	ev_tstamp
		2618	ev_timer_remaining (EV_P_ ev_timer *w)
		2619	{
		2620	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2621	}
		2622
2457	#if EV_PERIODIC_ENABLE	2623	#if EV_PERIODIC_ENABLE
2458	void noinline	2624	void noinline
2459	ev_periodic_start (EV_P_ ev_periodic *w)	2625	ev_periodic_start (EV_P_ ev_periodic *w)
2460	{	2626	{
2461	if (expect_false (ev_is_active (w)))	2627	if (expect_false (ev_is_active (w)))
…		…
2528	#endif	2694	#endif
2529		2695
2530	void noinline	2696	void noinline
2531	ev_signal_start (EV_P_ ev_signal *w)	2697	ev_signal_start (EV_P_ ev_signal *w)
2532	{	2698	{
2533	#if EV_MULTIPLICITY
2534	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2535	#endif
2536	if (expect_false (ev_is_active (w)))	2699	if (expect_false (ev_is_active (w)))
2537	return;	2700	return;
2538		2701
2539	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2702	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2540		2703
2541	evpipe_init (EV_A);	2704	#if EV_MULTIPLICITY
		2705	assert (("libev: a signal must not be attached to two different loops",
		2706	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
2542		2707
2543	EV_FREQUENT_CHECK;	2708	signals [w->signum - 1].loop = EV_A;
		2709	#endif
2544		2710
		2711	EV_FREQUENT_CHECK;
		2712
		2713	#if EV_USE_SIGNALFD
		2714	if (sigfd == -2)
2545	{	2715	{
2546	#ifndef _WIN32	2716	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK \| SFD_CLOEXEC);
2547	sigset_t full, prev;	2717	if (sigfd < 0 && errno == EINVAL)
2548	sigfillset (&full);	2718	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2549	sigprocmask (SIG_SETMASK, &full, &prev);
2550	#endif
2551		2719
2552	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2720	if (sigfd >= 0)
		2721	{
		2722	fd_intern (sigfd); /* doing it twice will not hurt */
2553		2723
2554	#ifndef _WIN32	2724	sigemptyset (&sigfd_set);
2555	sigprocmask (SIG_SETMASK, &prev, 0);	2725
2556	#endif	2726	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2727	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2728	ev_io_start (EV_A_ &sigfd_w);
		2729	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2730	}
2557	}	2731	}
		2732
		2733	if (sigfd >= 0)
		2734	{
		2735	/* TODO: check .head */
		2736	sigaddset (&sigfd_set, w->signum);
		2737	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2738
		2739	signalfd (sigfd, &sigfd_set, 0);
		2740	}
		2741	#endif
2558		2742
2559	ev_start (EV_A_ (W)w, 1);	2743	ev_start (EV_A_ (W)w, 1);
2560	wlist_add (&signals [w->signum - 1].head, (WL)w);	2744	wlist_add (&signals [w->signum - 1].head, (WL)w);
2561		2745
2562	if (!((WL)w)->next)	2746	if (!((WL)w)->next)
		2747	# if EV_USE_SIGNALFD
		2748	if (sigfd < 0) /TODO/
		2749	# endif
2563	{	2750	{
2564	#if _WIN32	2751	# if _WIN32
		2752	evpipe_init (EV_A);
		2753
2565	signal (w->signum, ev_sighandler);	2754	signal (w->signum, ev_sighandler);
2566	#else	2755	# else
2567	struct sigaction sa;	2756	struct sigaction sa;
		2757
		2758	evpipe_init (EV_A);
		2759
2568	sa.sa_handler = ev_sighandler;	2760	sa.sa_handler = ev_sighandler;
2569	sigfillset (&sa.sa_mask);	2761	sigfillset (&sa.sa_mask);
2570	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2762	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2571	sigaction (w->signum, &sa, 0);	2763	sigaction (w->signum, &sa, 0);
		2764
		2765	sigemptyset (&sa.sa_mask);
		2766	sigaddset (&sa.sa_mask, w->signum);
		2767	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2572	#endif	2768	#endif
2573	}	2769	}
2574		2770
2575	EV_FREQUENT_CHECK;	2771	EV_FREQUENT_CHECK;
2576	}	2772	}
2577		2773
2578	void noinline	2774	void noinline
…		…
2586		2782
2587	wlist_del (&signals [w->signum - 1].head, (WL)w);	2783	wlist_del (&signals [w->signum - 1].head, (WL)w);
2588	ev_stop (EV_A_ (W)w);	2784	ev_stop (EV_A_ (W)w);
2589		2785
2590	if (!signals [w->signum - 1].head)	2786	if (!signals [w->signum - 1].head)
		2787	{
		2788	#if EV_MULTIPLICITY
		2789	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2790	#endif
		2791	#if EV_USE_SIGNALFD
		2792	if (sigfd >= 0)
		2793	{
		2794	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2795	sigdelset (&sigfd_set, w->signum);
		2796	signalfd (sigfd, &sigfd_set, 0);
		2797	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2798	/TODO: maybe unblock signal? /
		2799	}
		2800	else
		2801	#endif
2591	signal (w->signum, SIG_DFL);	2802	signal (w->signum, SIG_DFL);
		2803	}
2592		2804
2593	EV_FREQUENT_CHECK;	2805	EV_FREQUENT_CHECK;
2594	}	2806	}
2595		2807
2596	void	2808	void
…		…
2644	static void noinline	2856	static void noinline
2645	infy_add (EV_P_ ev_stat *w)	2857	infy_add (EV_P_ ev_stat *w)
2646	{	2858	{
2647	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY \| IN_DONT_FOLLOW \| IN_MASK_ADD);	2859	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY \| IN_DONT_FOLLOW \| IN_MASK_ADD);
2648		2860
2649	if (w->wd < 0)	2861	if (w->wd >= 0)
		2862	{
		2863	struct statfs sfs;
		2864
		2865	/* now local changes will be tracked by inotify, but remote changes won't */
		2866	/* unless the filesystem is known to be local, we therefore still poll */
		2867	/* also do poll on <2.6.25, but with normal frequency */
		2868
		2869	if (!fs_2625)
		2870	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2871	else if (!statfs (w->path, &sfs)
		2872	&& (sfs.f_type == 0x1373 /* devfs */
		2873	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		2874	\|\| sfs.f_type == 0x3153464a /* jfs */
		2875	\|\| sfs.f_type == 0x52654973 /* reiser3 */
		2876	\|\| sfs.f_type == 0x01021994 /* tempfs */
		2877	\|\| sfs.f_type == 0x58465342 /* xfs */))
		2878	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2879	else
		2880	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2650	{	2881	}
		2882	else
		2883	{
		2884	/* can't use inotify, continue to stat */
2651	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2885	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2652	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2653		2886
2654	/* monitor some parent directory for speedup hints */	2887	/* if path is not there, monitor some parent directory for speedup hints */
2655	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2888	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2656	/* but an efficiency issue only */	2889	/* but an efficiency issue only */
2657	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2890	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2658	{	2891	{
2659	char path [4096];	2892	char path [4096];
…		…
2675	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2908	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2676	}	2909	}
2677	}	2910	}
2678		2911
2679	if (w->wd >= 0)	2912	if (w->wd >= 0)
2680	{
2681	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2913	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2682		2914
2683	/* now local changes will be tracked by inotify, but remote changes won't */	2915	/* now re-arm timer, if required */
2684	/* unless the filesystem it known to be local, we therefore still poll */	2916	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2685	/* also do poll on <2.6.25, but with normal frequency */
2686	struct statfs sfs;
2687
2688	if (fs_2625 && !statfs (w->path, &sfs))
2689	if (sfs.f_type == 0x1373 /* devfs */
2690	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
2691	\|\| sfs.f_type == 0x3153464a /* jfs */
2692	\|\| sfs.f_type == 0x52654973 /* reiser3 */
2693	\|\| sfs.f_type == 0x01021994 /* tempfs */
2694	\|\| sfs.f_type == 0x58465342 /* xfs */)
2695	return;
2696
2697	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2698	ev_timer_again (EV_A_ &w->timer);	2917	ev_timer_again (EV_A_ &w->timer);
2699	}	2918	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2700	}	2919	}
2701		2920
2702	static void noinline	2921	static void noinline
2703	infy_del (EV_P_ ev_stat *w)	2922	infy_del (EV_P_ ev_stat *w)
2704	{	2923	{
…		…
2780	return;	2999	return;
2781		3000
2782	fs_2625 = 1;	3001	fs_2625 = 1;
2783	}	3002	}
2784		3003
		3004	inline_size int
		3005	infy_newfd (void)
		3006	{
		3007	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3008	int fd = inotify_init1 (IN_CLOEXEC \| IN_NONBLOCK);
		3009	if (fd >= 0)
		3010	return fd;
		3011	#endif
		3012	return inotify_init ();
		3013	}
		3014
2785	inline_size void	3015	inline_size void
2786	infy_init (EV_P)	3016	infy_init (EV_P)
2787	{	3017	{
2788	if (fs_fd != -2)	3018	if (fs_fd != -2)
2789	return;	3019	return;
2790		3020
2791	fs_fd = -1;	3021	fs_fd = -1;
2792		3022
2793	check_2625 (EV_A);	3023	check_2625 (EV_A);
2794		3024
2795	fs_fd = inotify_init ();	3025	fs_fd = infy_newfd ();
2796		3026
2797	if (fs_fd >= 0)	3027	if (fs_fd >= 0)
2798	{	3028	{
		3029	fd_intern (fs_fd);
2799	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3030	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2800	ev_set_priority (&fs_w, EV_MAXPRI);	3031	ev_set_priority (&fs_w, EV_MAXPRI);
2801	ev_io_start (EV_A_ &fs_w);	3032	ev_io_start (EV_A_ &fs_w);
		3033	ev_unref (EV_A);
2802	}	3034	}
2803	}	3035	}
2804		3036
2805	inline_size void	3037	inline_size void
2806	infy_fork (EV_P)	3038	infy_fork (EV_P)
…		…
2808	int slot;	3040	int slot;
2809		3041
2810	if (fs_fd < 0)	3042	if (fs_fd < 0)
2811	return;	3043	return;
2812		3044
		3045	ev_ref (EV_A);
		3046	ev_io_stop (EV_A_ &fs_w);
2813	close (fs_fd);	3047	close (fs_fd);
2814	fs_fd = inotify_init ();	3048	fs_fd = infy_newfd ();
		3049
		3050	if (fs_fd >= 0)
		3051	{
		3052	fd_intern (fs_fd);
		3053	ev_io_set (&fs_w, fs_fd, EV_READ);
		3054	ev_io_start (EV_A_ &fs_w);
		3055	ev_unref (EV_A);
		3056	}
2815		3057
2816	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3058	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2817	{	3059	{
2818	WL w_ = fs_hash [slot].head;	3060	WL w_ = fs_hash [slot].head;
2819	fs_hash [slot].head = 0;	3061	fs_hash [slot].head = 0;
…		…
2826	w->wd = -1;	3068	w->wd = -1;
2827		3069
2828	if (fs_fd >= 0)	3070	if (fs_fd >= 0)
2829	infy_add (EV_A_ w); /* re-add, no matter what */	3071	infy_add (EV_A_ w); /* re-add, no matter what */
2830	else	3072	else
		3073	{
		3074	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3075	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2831	ev_timer_again (EV_A_ &w->timer);	3076	ev_timer_again (EV_A_ &w->timer);
		3077	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3078	}
2832	}	3079	}
2833	}	3080	}
2834	}	3081	}
2835		3082
2836	#endif	3083	#endif
…		…
2906		3153
2907	if (fs_fd >= 0)	3154	if (fs_fd >= 0)
2908	infy_add (EV_A_ w);	3155	infy_add (EV_A_ w);
2909	else	3156	else
2910	#endif	3157	#endif
		3158	{
2911	ev_timer_again (EV_A_ &w->timer);	3159	ev_timer_again (EV_A_ &w->timer);
		3160	ev_unref (EV_A);
		3161	}
2912		3162
2913	ev_start (EV_A_ (W)w, 1);	3163	ev_start (EV_A_ (W)w, 1);
2914		3164
2915	EV_FREQUENT_CHECK;	3165	EV_FREQUENT_CHECK;
2916	}	3166	}
…		…
2925	EV_FREQUENT_CHECK;	3175	EV_FREQUENT_CHECK;
2926		3176
2927	#if EV_USE_INOTIFY	3177	#if EV_USE_INOTIFY
2928	infy_del (EV_A_ w);	3178	infy_del (EV_A_ w);
2929	#endif	3179	#endif
		3180
		3181	if (ev_is_active (&w->timer))
		3182	{
		3183	ev_ref (EV_A);
2930	ev_timer_stop (EV_A_ &w->timer);	3184	ev_timer_stop (EV_A_ &w->timer);
		3185	}
2931		3186
2932	ev_stop (EV_A_ (W)w);	3187	ev_stop (EV_A_ (W)w);
2933		3188
2934	EV_FREQUENT_CHECK;	3189	EV_FREQUENT_CHECK;
2935	}	3190	}
…		…
3076	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3331	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3077	{	3332	{
3078	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3333	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3079		3334
3080	{	3335	{
3081	struct ev_loop *loop = w->other;	3336	EV_P = w->other;
3082		3337
3083	while (fdchangecnt)	3338	while (fdchangecnt)
3084	{	3339	{
3085	fd_reify (EV_A);	3340	fd_reify (EV_A);
3086	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3341	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3094	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));	3349	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
3095		3350
3096	ev_embed_stop (EV_A_ w);	3351	ev_embed_stop (EV_A_ w);
3097		3352
3098	{	3353	{
3099	struct ev_loop *loop = w->other;	3354	EV_P = w->other;
3100		3355
3101	ev_loop_fork (EV_A);	3356	ev_loop_fork (EV_A);
3102	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3357	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3103	}	3358	}
3104		3359
…		…
3118	{	3373	{
3119	if (expect_false (ev_is_active (w)))	3374	if (expect_false (ev_is_active (w)))
3120	return;	3375	return;
3121		3376
3122	{	3377	{
3123	struct ev_loop *loop = w->other;	3378	EV_P = w->other;
3124	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3379	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3125	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3380	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3126	}	3381	}
3127		3382
3128	EV_FREQUENT_CHECK;	3383	EV_FREQUENT_CHECK;
…		…
3240		3495
3241	void	3496	void
3242	ev_async_send (EV_P_ ev_async *w)	3497	ev_async_send (EV_P_ ev_async *w)
3243	{	3498	{
3244	w->sent = 1;	3499	w->sent = 1;
3245	evpipe_write (EV_A_ &gotasync);	3500	evpipe_write (EV_A_ &async_pending);
3246	}	3501	}
3247	#endif	3502	#endif
3248		3503
3249	/*****************************************************************************/	3504	/*****************************************************************************/
3250		3505
…		…
3399	if (types & EV_CHECK)	3654	if (types & EV_CHECK)
3400	for (i = checkcnt; i--; )	3655	for (i = checkcnt; i--; )
3401	cb (EV_A_ EV_CHECK, checks [i]);	3656	cb (EV_A_ EV_CHECK, checks [i]);
3402		3657
3403	if (types & EV_SIGNAL)	3658	if (types & EV_SIGNAL)
3404	for (i = 0; i < signalmax; ++i)	3659	for (i = 0; i < EV_NSIG - 1; ++i)
3405	for (wl = signals [i].head; wl; )	3660	for (wl = signals [i].head; wl; )
3406	{	3661	{
3407	wn = wl->next;	3662	wn = wl->next;
3408	cb (EV_A_ EV_SIGNAL, wl);	3663	cb (EV_A_ EV_SIGNAL, wl);
3409	wl = wn;	3664	wl = wn;

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+Removed lines
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+Changed lines
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Comparing libev/ev.c (file contents): Revision 1.297 by root, Fri Jul 10 00:36:21 2009 UTC vs. Revision 1.318 by root, Tue Nov 17 00:22:28 2009 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.297 by root, Fri Jul 10 00:36:21 2009 UTC vs.
Revision 1.318 by root, Tue Nov 17 00:22:28 2009 UTC